Investigation and Optimization of Chitosan Performance in Flocculating Kaolin Suspensions Using a Real-Time Suspending Solid Concentration Measuring Method

The performance of chitosan in flocculating kaolin suspensions was investigated. A real-time suspended solid (SS) concentration measuring method applied. influence pH examined from 2.0 to 13.0. optimal value for low-grade (100 mg/L), middle-grade (500 and high-grade (1000 mg/L) suspension samples 8.0. dosage the three grades 5.0 mg/L, regardless initial SS concentration. An orthogonal array test performed determine hydraulic conditions. Range analysis variance showed that all four considered factors significantly influenced flocculation following order: paddle rotation speed mixing period > time time. Intermittent agitation tests were also performed, showing alternating settling enhanced chitosan.